3D Game Avatar Generator - GTA Style - Latest Gemini Trend [Nano Banana]

{  "subject": "Transform the subject(s) from the uploaded image(s) into a full-body realistic 3D character model suitable for the Grand Theft Auto V gameplay environment. MUST include legs and feet, even if not present in reference.",  "style_and_aesthetic": {  "primary_style": "Match the in-game graphics aesthetic of Grand Theft Auto V (RAGE engine). Focus on realistic, slightly gritty textures for skin, cloth, denim, and leather. The rendering should look like a high-quality character snapshot taken directly from the game engine, not a pre-rendered cinematic or 2D illustration.",  "lighting": "Realistic outdoor game lighting e.g.. Strong, natural highlights and defined shadows that give depth to clothing folds and facial features.",  "avoid": [  "LEGO or plastic toy aesthetics",  "2D Loading Screen illustration style cel-shading",  "Cartoon or exaggerated proportions",  "Hyper-realistic photography (must still feel like a game)",  "Smooth, textureless surfaces",  "Cropped images (no half-body renders)"  ]  },  "subject_details_to_retain": {  "identity_preservation": "Translate the subject's upper clothing, hair style, and accessories realistically. Hair should have strands and texture. Clothing should appear as real fabric with weight and natural folds appropriate for the material.",  "facial_features": "Recreate the facial expression and features realistically based on the reference. The skin tone, eye color, and facial structure must be an accurate, realistic match to the person in the reference image, rendered with game-appropriate skin shaders.",  "clothing_printing": "Convert all specific clothing logos, patterns, and branding from the reference image into high-detail realistic textures applied to the fabric."  },  "character_integration": {  "body_proportions": "Use realistic adult human proportions typical of GTA V protagonists. CRITICAL: If the reference image is cropped, mentally extend and complete the body. Generate realistic legs, feet, and appropriate footwear e.g. that match the style of the upper body clothing.",  "pose_translation": "Adapt the subject's original upper body pose into a complete, natural, realistic human full-body stance standing firmly on the ground. The entire body, from head to feet, must be pose-consistent.",  "multi_subject_handling": "If two subjects are present, transform BOTH into separate, complete full-body in-game character models standing side-by-side."  },  "game_world_elements": {  "optional_held_items": "If a subject is holding a distinct object, replace it with a realistically modeled in-game equivalent with realistic textures."  },  "output_requirements": {  "framing": "MANDATORY FULL-BODY VIEW. The entire character from the top of the head to the bottom of the feet must be fully visible and centered in the frame. The camera should be positioned to show the complete model standing on an invisible ground plane.",  "background": "Transparent background only (PNG). No game scenery, streets, or environments.",  "render_quality": "High-quality game engine render. Sharp focus on the entire character model, crisp textures on clothing, and detailed footwear."  },  "negative_prompt": {  "forbidden_styles": [  "LEGO studs",  "Plastic skin sheen",  "Cartoon eyes",  "Low-resolution textures",  "Painted-on clothing look",  "Anime style",  "Blurry render"  ],  "cropping_constraints": "Do not crop the image. Do not cut off the feet or legs. The final output must not be a portrait or half-body shot."  } }